Vehicle elastic suspension



Nov. 22, A1927.

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Filed Jan. l5. 1924 C BELTRAMI VEHICLE ELASTIC SUSPENSION Patented Nov. 22, 1927.

UNITED STATES PATENTl oFFlcE.

casann BELTRAN; orniLA'N, ITALY.

VEHICLE ELAsTIc sUsPnNsIoN.

Application med January 15, maa-serial No. 686,427, and 1n 'muy ranuaryas, laas.

'.lhe present invention relates to a vehicle elastic suspension arrangement essentially made up of hinged parallogra-ms and springs.

The novel arrangement is diagrammatically illustrated in the .annexed drawing, in which:

Figs. 1 and 1a show one form of the invention, Fig. 1 representing the rear suspension and Fig. 1a the front suspension.

Fi s. 2 and 2 are views similar to Figs. 1 an 1a and show a modified form.

Fig. 3 is a top plan View of a. modified form of the yielding arrangement according to Figs. 1 and 1, on a larger scale.

Fig. 4 is a section through 4-4 in Fig. ,3. To the rear casing feof the dilerential gear and to the front casing.-yof the steering gear are pivotally attached at -w-, by one of their ends, the two rods -0- and -c-, and at -z-, the tworods tached at -L-, -Z- to the up er end of substantially vertical arms ftwhich constitute the supporting uprights for the wheels. To the lower ends of b and -f1f are pivotally attached at -mf, -/m-, the other ends of the rods df-3 aV- In this manner for .each pair of wheels, two hinged parallelograms are formed having a vertical side -fw-, 2 2

have their inner ends hinged,j not to the center pivots fwand -z-, but, as shown in Fig. 2, to diii'erentpoints, for instance, -w-zof the differential casing a2- 40 and -w-z of the steering gear casing The springing of the parallelograms may be obtained by means of a single laminated spring -e- (Fi 1), the ends of which are pivotally attache to the vertical arms -`bat -oto the vertical arms a at -p, the center of the sprin being secured to the center line of the di erential casing -aand steering gear casing y'.

|` The spring femay be.

The rod sets -c-cand -d-d may replaced, i

shown in Figs. 3 and 4, by two parallel laminated spnngs'e`. springs are ivotally connected to the vertical arms and -wof the parallelograms in the same manner as shown in Fig. 1. -In the center, the springs are spaced apart by a bolt -vprojectingfrom either casmgs the twoI springs. i

of the spring laminations. The plate -gin its turn is secured in place by tightly screwing the nut -fion the screw-thread# ed end oi. bolt -W v The laminated vspring may be replaced by other'types o f springs adapted to maintain the parallelograms in the positions shown in the drawinga For instance, bepOlIltS Z-, y-42"?,

The-ends of these and yand lying between g.- grip the'outside edges of one or more i 'l (Fig. 2) spiral ftension springs -gand -T-- may points and mffw- (Fig. 1),

provided. 'Eventually both compression and tension springs may be provided.

be provided, orI betweenI the Having .now particularly described l 'my i' said invention, I declare that4 what I claim is:

In avmotor vehicle, a casing arranged at' the center ofithe vehicle, roadwheels ar'- ranged at thefside 'of the vehicle, vertical arms, carrying axles onl which the' road wheels are mounted, parallel rodspivotally connecting the arms to the'casing, said `casing, arms and links orminga a1r of paral- I lelograms arranged side by si e, and sprin means having its central portion connecte to the u per portion of the casing and its outer en s pivotally-connected to said arms, i

said springmeans consisting of a laminated spring having its. central'portion resting on the casin and its endssecured lto the arms intermediate the lends of said arms.

Signed at Milan, Italy, this 29th day of December, 192.75.A l 

